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Patented Jan. 24, 1888 Wimm; fik/mt w.

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(No Model.) I 3 Sheets-sheet 3." O. SKRIVANZiz'P. DVORAK.

WATGHMANS ELECT-RIG CONTROLLING APPARATUS.

No. 376,920, v Pate'n'ted Jan. 24, .1888.

N I 1 y o en STATES [P TE T OFFICE-3* 7 OTTOKAR SKRIVAN ANDY FRANCIS DVORAK, OF VI'NOHRADY, PRAGUE, Bo- I HEMIA, AUSTRIA-HUNGARY.

WAYTCHMANS ELECTRIC CONTROLLING APPARATUS.

SPECIFICATION forming part of Letters Patent No. 376,920, dated January 24,1888.

Application filed February 5 WEI/Serial No. 226,695. (No model) To aZZ whom it may concern: Be it known that We,OTTOKAR SKRIVAN and FRANCIS DVORAK, both subjects of the Emperor of Austria-Hungary,and both residing at Vinohrady, Prague, in the Kingdom of B0- hemia,in the Austrian Empire,haveinvented certain new and useful Improvements in Electric Watchmen Controlling Apparatus, of which the following is a specification.

It is always very desirable to be able to know if a watchman on duty be at his post at the proper times.

The object of our invention is to provide an electricapparatus by means of which a watchman visiting certain designated stations at' certain given intervals can i make registry of each visit to each station upon a registering device at a central station at which the controlling watchman is on duty. The various devices by which this is accomplished will be more fully hereinafter described.

The nature of the invention consists in the details of construction and combination, substantially as illustrated in the drawings,hereinafter described, and subsequently pointed out in the claims. I

Figure 1 illustrates a front view'of a central registering-clock with part of the frame broken away for the purpose of better illustration. Fig. 2 is an edge view of the same. Figs. 3, 4, and'5 illustrate various forms of the transmitter to be used by the watchman at his station in signaling. the central station.

Fig. 6 is an edge view of the same modification'illustrated'in Fig. 5.; Fig.7 is a diagrammatic illustration of the relative arrangement of the various stations and their connectingcircuits.

The central registering-clock,'which is illustrated in Figs.1 and 2, is described as follows: A A is the frame of the clock. In this is set the spur-wheel and barrel f. Within this barrel is coiled the spiral spring f, with its inner end made fast to the shaft of the wheel and its outer end fastened to the barrel both in the common and well-known way, and arranged with ratchet, pawl, and. winding-post,

as such devicesare ordinarily constructed for winding in clocks. This spur-wheel f meshes into the pinion g upon the same shaft which carries the index 0. Upon this sameshaft is V the pinion h. Upon the same shaft with the mountedthe spur-wheel g, which meshes into l pinion h is mounted the spur-wheel'h, which meshes into the pinion 0 upon thesame shaft with the escapement-wheeleand the disk-,

wheel 7. The shafts of all this train of wheels are journaled in bearings in the frame AA of the clock.- The escapement consistsof the said wheel 6, which is star-shaped, and the forked bell-crank lever aa a.

the forks of this lever is a pin. The upper one of these pins is designated by't" andthe' This bell-crank lever a" at c is lower'one by 'i. a d pivoted at c and actuated by the magnet I) b and the spring 0 The graduated dialBis provided, on which are designated signals trans.- mitted by the watchman from the out station.

6c I, Upon'each of Two springs, d and d, attached to the frame of the clock, rest upon the insulating-pins (1 call and make signals, are each provided with a transmitter, by which the circuit from this station to the central station may be closed, or

broken to give the signal. Threedifferent modifications of this device are illustrated in Figs. 3, 4, 5, and 6. a Y 7 y In'the example illustrated in Fig. 3 an index-hand is mounted upon the disk q. The

edges of this disk are formed into a ratchet, as'

illustrated, in which works the pawl 0, held by the resilience of the springn. ,Upon the disk q is a shoulder, upon which are lugs 6", between which and the ratchet is placed the insulating-ring r, so that the springm, when the disk q is'turned, will be sometimes on the lugs e and sometimes on the insulating-band .9

r, and thus 'an electric circuit maybe closed and' broken-alternately by revolving the disk- Fig. 4 illustrates another example ofthe I transmitter. In this thepoints 6 coming into contact with the springs m and n, alternately close and break circuits with the central clock;

and a bell in the central station. I

' In the example of the transmitter illustrated I i 7 7 and dt and act in connection with the pin j, which the disk-wheelj carries on its edge.- The out stations, where the watchman is to I in Fig.5 the springs 12. and of, while resting on the insulating-band'r, are not in contact with the springsm and m but when the lug e raises either a or a the contact with the other spring is complete, as shown in dotted lines at n W. In this way by properly attaching conductors a circuit may be closed and broken with the central clock or the bell in the central station; or this form of the trans mitter may be used to break the circuit. As long as both the springs 11 and p ride on the edge of the disk q, so long the circuit will be closed; but as soon as the revolution of the disk q brings the notch s to the bent end of one of these springs the bend, falling into the notch, rests on the insulating-ring r and the circuit'is broken; and it is obvious that the apparatus may be so arranged that the signal may be as easily transmitted by breaking as by closing the circuit.

The simplest form of this invention is illustrated by the connections of 18 and 20 of Fig. 7. Let represent the battery, a wire from one pole of which is conducted to the earth in the usual way. Conductor 11 connects the other pole with the signal-transmit-terlS. This is connected with the central clock, 20, by the conduetor12, and aproper connection is made from the said central clock to the earth. As long as the spring m lies on the insulatingring 1", the connection between the battery 10 and the clock is incomplete; but as soon as the watch man comes and turns the mechanism, as heretofore described in relation to Fig. 8, until one of the lugs 0 comes upon the spring m. Then the circuit is closed. As the central clock, 20, is the sameas that illustratedin Fig. 1,we now refer again to said Fig. 1. The current from the battery 10 is, as aforesaid, transmitted through the station 18 to the central clock, entering the central clock through the conductor 12, and charges magnet 12 1). Until now one point of the escapement-wheel e was resting upon the lower pin, 12, of the escapement-lever a a, pressed by the resilience of the springf, acting through the train of wheels in the clock heretofore described; but as soon as the magnet b 1) becomes charged by reason of the watchmen at the out station closing the circuit, as before described, the arm a of the escapement-lever is drawn downward by the attraction of the magnets, carrying the pin i below the point ofthe escapementwheel. This point of the escapement-wheel instantly passes this pin 1' and catches on the pin 1', which by reason of the movement of the escapementlever is now in its way. This pin 2" holds the wheel in such a position that as soon as the watchman at the out station has moved the index so far as to again break the circuit, and the resilience of the spring 0 returns the escapement-lever to its original position and releases the point of the escapement-wheel resting on the pin 13, the point of the eseapementwheel e second after that just escaped from the pin 1' falls upon the said pin z. Thus as there are only four equidistant teeth in the escapement-wheel it makes the half of a turn with each escapement, and at each escapement allows the mechanism motion enough to carry the index-hand C forward to the next graduation on the dial B, and thus each visit of the watchman to the out station is registered by the central clock. If it is desirable, the conductor from the clock, instead of leading to the ground, may be connected with a bell, also in the central station, as illustrated by the conductor 23 and the bell mechanism B of Fig. 7. From this bell mechanism a wire may be conducted to the earth to complete'the circuit; or, if it may be desired, the conductor 23 may be as the pinj of the disk-wheelj springs around and impinges with momentary connection on one of the springs d the bell will give a single stroke to announce the registry of the signal from the out station. Each separate out station may thus have its separate transmitter and separate central clock and bell; or the whole series may be joined together and be operated with one central clock or one central clock and one hell; or the bell mechanism may be operated by an independent battery, which is designated by 5. In the case of the transmitter 21, whose actuating-battery is desig nated by 13, the circuit may be closed with the bell and clock alternately, transmitting the current through the conductors 15 and 24 alternately by alternate contact of the points ,6 with the springs m and n. In the case of transmitter 17, whose actuating-battery is designated by 8, the circuit may be closed on one side with the bell and with the clock on the other, or with the hell on both sides, or with the clock on both sides, by the proper connection of the conductors 7, 22, 2, and 16 and the springs m a m n", as hereinbefore' specified. This transmitter may also be used to break the circuit by the proper disposition of the conductors 9 and 1 and by the operation of the springs 19 and p, as hereinbefore described.

By means of this apparatus one watchman at a central station is made aware of the proper attendance of other watchmen at out stations at proper designated intervals of time, and if either watchman fails in properly visiting an out station and transmitting his signal the failure of registry at the central station makes it immediately apparent.

What we claim as our invention, and desire to secure by Letters Patent, is

1. In an electric clock, the combination of the frame A A, the spring f, the train of wheels f g g h h 0', their shafts journaled in said frame, the escapement-wheel e, the escapement-lever a a c, pivoted to said frame at a, the spring a", the magnet b b, the disk-wheel .j, the pin the springs d d, attached to the said frame, and electric connections, substantially as specified, for transmitting an electric current to and through said mechanism, sub stantially as and for the purpose set forth.

2. The combination, with an electric clock, a bell mechanism, and an electric battery and con nected with theinsulated springs d d, so that circuit, all substantially. as hereinbefo -e speei- In witness whereof we hereunto setour hands; [0 fied, of a transmitter-cbnsisting of the disk q, in ppesence of two witnesses.

having edges formed into a ratchet in which v Works pawl '0, held by. spring n and carrying K OTTOKA-R SKRIVAN. 5 the index-hand K, the lugs e", the insulating- FRANCIS DVORAK.

ring 1", and the spring m, by the ,use of which, I v I r to break and'close said circuit, signals may be Witnesses: transmitted, registered, and announced, sub- -ADOLF FISCHER, stantialiy asand fer the purpose set forth. I J OSEF BEROUNSKY; 

